Question

which unit of geologic time began 65.5 million years ago and continues to the present? cenozoic era mesozoic era permian period precambrian time

Explanation:

The Cenozoic era began approximately 65.5 million years ago and continues to the present. It is characterized by the diversification of mammals and the appearance of humans. The Mesozoic era ended around 65.5 million years ago with the mass - extinction event. The Permian period predates the Mesozoic era, and the Precambrian time is even earlier, spanning from the formation of the Earth to the start of the Cambrian period.

Answer:

D. Cenozoic era